Cigarette-making machine



May 20, 1930. P. E. HoHN CIGARETTE MAKING MACHINE Filed Jan. 23, 1928 2Sheets-Sheet l May 20, 1930. HOHN 1,759,747

CIGARETTE MAKING MACHINE Filed Jan. 25, 1928 2 Sheets-Sheet 2 PatentedMay 20, 1930 1 UNITED) STATES PATENT omen MAX PAUL ERNST norm, Fnansnnn, GERMANY, Assrenon To UNIVERSELLE? CIGARETTENMASOHINENFABRIK J.c. MULLER & oo., or nansnnn, GERMANY CIGARETTE-MAKING MACHINEApplication filed January 23, 1928, Serial No. 248,5el, and in GermanyJanuary 25, 1927.

\Vhen the continuous extruded string or rod delivered by thecigarette-making machine is cut through by means of a sickleshaped knifeor cutter which executes arevolving or circulating movement and comesinto engagement with the continuous string once in the course of itscircuit, thesickle- Y shaped cutter may be caused to revolve in aplane." In this case the carrier of the sickleshaped cutter must be socontrolled that it executes a-reciprocating movement in the direction ofthe continuous rod, in order that the sickle shaped cutter, on cuttinginto the continuous rod, shall take part in the motion of the rod in thedirection'of travel and at the same speed as the latter. The same efiectmay be obtained, however, with a stationary sickle knife-carrier, by notletting the sickle knife revolve in a plane but effecting the revolutionof the sickle knife along a helical line or letting the sickle-knifecarrier execute a wobbling movei'nent about .its axis of rotation. Inthis case also the sickle knife follows'the string in its direction offeed, during'the cut, and with the velocity of feed of the string. V v

As is'shown, the sharpening and whetting of the sickle knife must takeplace while the machine is running. For this purpose the sickle knifecomes into contact with a grinding means and a whetting means, once atthe completion of each circuit after effecting the cut. I W Q When thesickle knife revolves in a plane,- no spe'cial controlling of thegrinding and sharpening means is required." These means may be simplyarrangedon theslidewhich carries the sickle-knife carrier, and it isonly necessary .to. adjust the grinding and whet.- ting means, whichconsist of freely rotatable rollers or discs,to asuitable obliquity, inor der that it may be able'to follow the recedgrinding means and thewvhetting means adapt themselvesduring 'ei'igagement with the sickleknife, not merely to'the receding cutting edgeof the sickle knife butalso to the helical turn or to the wobbling mewment. V

According to the invention the carrier for the grinding'means consistsof a swing lever with an adjustable fulcrum, which, ina man-' ner knownin itself, is caused by a crank gear, to swing against the sickle knifeblade, the carrier of the whet-ting means being connected with the swinglever by a controlling gear, so that the grinding means and the whettingmeans, each of which is mounted with a suitable obliquity, are pressedby the controlling of the crank gear, as thesickle knife passes,against: the cutting edge thereof, from the corresponding side, inxsucha way that they follow the receding cutting edge, which, at the sametime is executing the helical turn or the like.

With this construction of the carrier for the whetting means it isimmediately possi ble to arrange the said swing lever displace ably andadjustably upon a bracket, the said bracket preferably being arranged in,the

of the fulcrum of theswing is moved by'means of a connecting rod fromthe swing lever which carries the grinding means. 1

This construction of the new deviceis illustrated in the accompanyingdrawings, Figure 1 being a side elevation thereof. Figure l is a viewfrom above; Figure 1 is a special view thereof. Figures 2 and 3 areviews of parts of the apparatus, Figure 2 being a' view looking in thedirection of the arrow A indicated in Figure 1, while Figure '3 is aview looking in the direction of the .100

arrow B in Figure 1.

, known mannerrras a wobbling disc.

7 Figure 1? shows in aview froinqabove the cooperation of the grindingand whetting meansg The knife carrier 45 is formed in the It is adaptedto swing on the knife carriersliaft 47 by means of the bolt or pin 46and tobeadus'ted by ineansof the screws 48,49'i, e. more i or lessinclined to the longitudinal aXisof the knife carrier shaft.

7 The sickle knife 50 is in its lowest position in .Figure 1 andapproaches T116 grinding discf22 After the bevel or face of the sickleknife 50. has been ground on the correspondingly finclined grindingdisc' 2 (F igurel the sickle knife,

during its further movement, moves past the Whetting disc 32, therearfside of the knife ,moving along the whetting disc, whereupon theknife is whetted. I v 7 Figures 4 and 5 show in s'ideelevation and inplan a second constructional form of the arrangement and ofthe'controlfor the car rier of thewhetting means. I V i In the closed casing1-containing the drive and filled with oil, is provided a crank disc 6,

- "driven from a driving sl aft2 by gear wheels 3, 4 and 5: Upon'a crankpin 7 on this crank,

s disc 6 is mounted a guiding link ,8, which is pivotally connected at 9to a crank rod 10.

7 7 This rod passes through the wall of the e as-1 ing with suitablepacking andis here satisfactorily guided by a long guiding piece 11.

i To the end of the rod 10 is pivoted by means of a bolt 12, a guidinglink 13, which is pivfotally connected at the other end with a'swing'lever 14.v This swing lever swings about a bolt 15, and itsoscillation is brought l about by the reciprocating movement of theguide.

crank rod 10. The bolt is carried by a downwardly projecting bracket 16of a slide piece 17 which is displaceable by the aid of a screw-threadedspindle 18. fThis screwthreaded spindle is rotatably held at 19 to a canbe'shifted against the cutting blade, which is indicated by a dottedline, as the swing lever 14' also executes its swinging movement 7against this knife blade. The; swing lever 14 carries the bearing 21 forthe grindingdisc V 22. The grinding disc 22 is mountedzupo i V arotatable spindle 23,, which passes through a bearing eye 24. Thebearingbody 21 is v mounted by a base plate 25 upon a head plate 26"of'thelever 14, the connection being effected by screws or the like, in suchaway 7 that no rotation ofthe bearing'21 about its vertical axis ispossible, and accordingly accurateadjustment of the guiding surface tothe cutting edgeofthe sickle, knife blade can takepla'cer V v a V Nowupon the pivot bolt 12 (see also Fig ure 3) is rotatably mounted .aconnecting rod 27. This isattached at its other endto a pivot pin 28,which is rotatably mounted on The rotation of the spindle is eflected bymeans ofya handwlieel 20. Accordingly the pivot bolt 15 of the swinginglever 14 a lever 29. The lever is screwed at its upper H its, spindleina bearing eye 33. The carrier 31 is rotatably mounted-upon a journal34, one flattened end of which is-inserted in a guidingslot 35inacarrying arm 36 and can be clamped at the desired height by screws 84The guiding arm 36' ishbent at right angles, the bent part 37passing'througha end to a'bracket 30 extending downwardsy from thecarrier 31 that carries the Whetting; disc 32 (see alsoFigureQ).Thewhetting disc is freely rotatable and is mounted with 1 horizontalguide 38. By means of a screW- threadedspindle 39 and a handwheel 40,the

guide piece 36' can be shifted and adjusted.

in the guide 88.

By the crank rod 10 thelgrinding disc 22 ispressed against the cuttingedge of the sickle knife at the instant when the sickleknifecomes'within itsreach Thecorrect adjusting of the bolt 15 providesunderthese circumstances for an appropriate oblique posi- 1 tion ofxthegrinding surface, in ordercthat V the latter may bear. correctly againstthe facet of the sickle knife. ,7

The further controlling by the crank rod '10 yields the result that thegrinding surface gaging with the cutting edge of the sickle knife itfollows the retreat ofthe said-cutting edge,- as well as the wobblingmovement. In the construction according to Figures 4 V and 5 a bracket41iis screwed to the swing lever 14, which is controlled bythe crank rod10 and carries the carrier 21 of, the'grinding means 22, in theneighbourhood of the ful I cru nr15. Theca 'rier 33 of the Whettingmeans'32 is mounted on; this bracket 41 in??? such a inannerthat it'fcanbe shifted and clampedin a manner known in itself, the V entire carrierbeing rotatable by means of a screw bolt 42, and the screw bolt passingthrough a slot 43, which is indicated in Fig; ure 4, and which enablesthe carrier33 to be raised and lowered. ur'thermore the sle eve' 44passing transversely. through the carrier 33 can be axially'adjusted andclamped in relation to the spindle of the whetting means 32 passingthrough this sleeve. 1 i

the swing lever 14. a r

That Iclaim is:

participates in the controlling inovementlof LApparatus for controllingthe grinding H and whetting means for the sickle knives'of stringcigarette machines, comprising a'sickle knife for cutting up thecigarette strings.

into separate cigarettes, said sickle knife In this construction thewhettin'g means '32 7 being adapted to follow the string in thedirection of feed of the string and with the velocity of the stringduring the execution of the cut, obliquely positioned grinding means forsaid sickle knife, a swing lever carrying said grinding means, obliquelypositionedtact with the cutting edge of the sickle knife in passing andto cause said grinding means and said whetting means to follow thecutting edge and remain in contact with it as it recedes from them 2.Apparatus for controlling the grinding and whetting means for the sickleknives'of string cigarette machines, comprising a sickle knife forcutting up the cigarette string into separate cigarettes, said sickleknife being adapted to follow the string in the direction of feed of-thestring and with the velocity of the string during the execution of thecut, obliquely positioned grinding means for said sickle knife, a swinglever carrying said 7 grinding means, means for displacing. the fulcrumof said swing lever, obliquely positioned whetting means for the sickleknife, a carrier for said whetting means, controlling means connectingsaid whetting-means carrier with the swing lever and crank gear adaptedto rock the swing lever so as to move the grinding means and thewhetting means into contact with the cutting edge of the sickle knife inpassing and to cause said rinding means and said whetting means tofdllow the cutting edge and remain in contact with it as it recedes fromthem.

3. Apparatus for controlling the grinding and whetting means for thesickle knives of string cigarette machines, comprising a sickle knifefor cutting up the cigarette string into separate cigarettes, saidsickle knife being adapted to follow the string in the direction of feedof the string and with the velocity of the string during the executionof the out, obliquely positioned grinding means for said sickle knife, aswing lever carrying said grinding means, obliquely positioned whettingmeans for the sickle knife, a carrier for said whetting means, aslidably arranged carrier on which said whettingmeans carrier isrotatably supported, a second swing lever engaging with thewhettingmeans carrier, a crank interposed between the two swing leversto enable the first swing lever to control the second and thereby tomove the grinding means and the whettingmeans into contact with thecutting edge of the sickle knife in passing and'to cause said grindingmeans and said whetting means to follow the cutting edgeand remain incontact with it as it recedes from them.

I 4. Apparatus for controlling the grinding and whetting means for thesickle knives of string cigarette machines, comprising a sickle knifefor cutting up the cigarette string into separate cigarettes, saidsickle knife being adapted to follow the string in the direction of feedof the string and with the velocity of the string during the executionof the cut, obliquely positioned grinding means for said sickle knife, aswing lever carrying said grinding means, obliquely positioned whettingmeans for the sickle knife, a carrier for said whetting means, aslidably arranged carrier on which said whetting-means carrier isrotatably supported, said slidably arranged carrier being formed with aguiding slot, a

pivot for the whetting-means carrler, said pivot being adapted to slidein said guiding slot and to be clamped therein, a second swlng.

lever engaging with the whetting-means carrier, a crank interposedbetween the two swing lovers to enable the first swing lever to controlthe second and thereby to rotate the whetting-means carrier, and crankgear adapted to rock the swing lever so as to move the grinding meansandthe whetting means into contact with the cutting edge of the sickleknife in passing and cause said grinding means and said'whetting meansto follow the cutting edge and remain in contact with it as it recedesfrom them, said crank gear comprising a reciprocating crank rod, a pivotbolt at one end of said crank rod, a lever link connecting said pivotbolt to the first swing lever, and a crank connecting said pivot bolt tothe second swing lever. i

In testimony whereof I have signed my name to this specification.

MAX. PAUL ERNST HOHN.

